City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9385
Mokena
County, IL
58 D
#9386 Monticello
County, UT
58 D
#9387 Morton Grove
County, IL
58 D
#9388 Muscle Shoals
County, AL
58 D
#9389 Norton
County, KS
58 D
#9390 Ochelata
County, OK
58 D
#9391 Onarga
County, IL
58 D
#9392 Orange
County, TX
58 D
#9393 Palmer
County, MA
58 D
#9394 Peru
County, IL
58 D
#9395 Red Bud
County, IL
58 D
#9396 Rock Falls
County, IL
58 D
#9397 Rockwood
County, PA
58 D
#9398 Rush Springs
County, OK
58 D
#9399 Sarepta
County, LA
58 D
#9400 Saucier
County, MS
58 D
#9401 St Albans
County, VT
58 D
#9402 St. Ignace
County, MI
58 D
#9403 Stark
County, KS
58 D
#9404 Summit
County, IL
58 D
#9405 Syracuse
County, NY
58 D
#9406 Temple Terrace
County, FL
58 D
#9407 Tinley Park
County, IL
58 D
#9408 Troy
County, IN
58 D
Frequently Asked Questions
How are city water quality rankings calculated?
WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.
Can I compare two US cities directly?
Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.
How often does WaterQ refresh city data?
City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.